CVE-2022-49089

IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition

Description

In the Linux kernel, the following vulnerability has been resolved: IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition The documentation of the function rvt_error_qp says both r_lock and s_lock need to be held when calling that function. It also asserts using lockdep that both of those locks are held. However, the commit I referenced in Fixes accidentally makes the call to rvt_error_qp in rvt_ruc_loopback no longer covered by r_lock. This results in the lockdep assertion failing and also possibly in a race condition.

N/A

CVSS

Severity:

EPSS 0.05%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/8a50937227c385a477177c9ffa122b4230e40666
https://git.kernel.org/stable/c/43c2d7890ecabe527448a6c391fb2d9a5e6bbfe0
https://git.kernel.org/stable/c/92f1947c0d26060e978b3a9f21f32ce7c8c9cca3
https://git.kernel.org/stable/c/77ffb2495a41098f9d6a14f8aefde3188da75944
https://git.kernel.org/stable/c/57800cc36e55db0547461c49acf5cd84c0f502b0
https://git.kernel.org/stable/c/4d809f69695d4e7d1378b3a072fa9aef23123018

Frequently Asked Questions

What is the severity of CVE-2022-49089?: CVE-2022-49089 has not yet been assigned a CVSS score.
How to fix CVE-2022-49089?: To fix CVE-2022-49089, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49089 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49089 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49089?: CVE-2022-49089 affects Linux Linux, Linux Linux.

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